CVE-2026-32956: SD-330AC and AMC Manager provided by silex technology, Inc

Q: How do I fix CVE-2026-32956?

sd-330ac firmware: upgrade to 1.50; amc manager: upgrade to 5.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-32956 being exploited?

CVE-2026-32956 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-32956 affect?

CVE-2026-32956 affects sd-330ac firmware, amc manager. Severity is critical (CVSS 9.8). SD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in processing the redirect URLs. Arbitrary code may be executed on the device.

Q: How urgent is CVE-2026-32956?

Priority 53/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2026-32956 is a critical-severity flaw (CVSS 9.8) affecting sd-330ac firmware, amc manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in processing the redirect URLs. Arbitrary code may be executed on the device.

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-04-20
Last modified	2026-10-26

Publisher (CNA): JPCERT/CC · Vendor: silextechnology

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-20 04:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

silextechnology sd-330ac firmware UPGRADE

Affected: < 1.50

Fixed in: 1.50

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

silextechnology amc manager UPGRADE

Affected: < 5.1.0

Fixed in: 5.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy amc-manager || rpm -q amc-manager || amc-manager --version

2. UPGRADE to 5.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade amc-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade amc-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · rust-opendal-core · FIXED · 0.59.1-2.fc46 · FEDORA-2026-4607543819 · source

sudo dnf upgrade --advisory=FEDORA-2026-4607543819

Fedora ELN · velocitty · FIXED · 1.0.3-2.eln159 · FEDORA-2026-edae8cd295 · source

sudo dnf upgrade --advisory=FEDORA-2026-edae8cd295

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-32956?

sd-330ac firmware: upgrade to 1.50; amc manager: upgrade to 5.1.0. Exact commands for each OS are on this page.

Is CVE-2026-32956 being exploited?

CVE-2026-32956 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-32956 affect?

CVE-2026-32956 affects sd-330ac firmware, amc manager. Severity is critical (CVSS 9.8). SD-330AC and AMC Manager provided by silex technology, Inc. contain a heap-based buffer overflow vulnerability in processing the redirect URLs. Arbitrary code may be executed on the device.

How urgent is CVE-2026-32956?

Priority 53/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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